Fix darkmode on ports tab select boxes

src/css/tabs-dark/ports-dark.css

@@ -1,12 +1,3 @@
-.tab-ports select {
-    border: 1px solid #00000000;
-}
-
-.tab-ports .ports select {
-    background-color: #3a3a3a;
-    color: white;
-}
-
 .tab-ports table td:first-child {
     border-left: none;
 }

src/css/tabs/ports.css

@@ -54,6 +54,8 @@
     border: 1px solid var(--subtleAccent);
     border-radius: 3px;
     margin-right: 3px;
+    background: var(--boxBackground);
+    color: var(--defaultText);
 }
 
 .tab-ports .require-support {